07-11-2020, 05:10 PM
A couple of years ago i purchased a 12.5" BA in 6.5 Grendel. It was NOT my first AR pistol, but it was my first 6.5 Gr AR pistol. I couldn't get it to run correctly. I did a lot of experimenting with different buffers and springs b/c I was hesitant to mess with the gas port and I didn't want to send it back. I called BA, they said it should be .055", b/c they "assumed" I and other customers with a 12.5" would be running a 12.5" suppressed. I wasn't, and still not. I finally measured the port, it was .050". I drilled it myself to .068" (if I remember correctly?), it runs fine now.
Accuracy is probably as good or better than my eyes/shooting skills, no complaints there.
Accuracy is probably as good or better than my eyes/shooting skills, no complaints there.